Manufacturing method of rotating electric machine and rotating electric machine

Abstract

A manufacturing method of a rotating electric machine includes the steps of: preparing a plurality of split stator cores annularly arranged at intervals in a circumferential direction so that their inner end portions are aligned with an imaginary circle and a support member positioned inside the imaginary circle in a radial direction to support the inner end portions of split stator cores; mounting a fastening member on outer peripheries of split stator cores to press respective split stator cores inward in the radial direction; and displacing split stator cores pressed by fastening member inward in the radial direction while the support member is supporting split stator cores.

1. A manufacturing method of a rotating electric machine, the method including the steps of:
 preparing a plurality of split stator cores annularly arranged at intervals in a circumferential direction so that inner end portions thereof are aligned with an imaginary circle and a support member positioned inside said imaginary circle in a radial direction to support the inner end portions of said split stator cores; 
 mounting a fastening member on outer peripheries of said split stator cores to press said respective split stator cores inward in said radial direction; and 
 displacing said split stator cores pressed by said fastening member inward in said radial direction while said support member is supporting said split stator cores, 
 wherein said support member supports portions of said inner end portions including at least first areas and second areas positioned away from each other in a direction of a central axis of said imaginary circle, 
 wherein said support member includes a first elastic member and a second elastic member, said first elastic member curves to bulge toward a radial outside of said imaginary circle to thereby be able to support the portion of each of said inner end portions where said first area is positioned, said second elastic member curves to bulge toward the radial outside of said imaginary circle to thereby be able to support the portion of each of said inner end portions where said second area is positioned, and 
 said first elastic member and said second elastic member are deformed in such a manner that bulging amounts toward the radial outside of said imaginary circle reduce so that said split stator cores are displaced toward a radial inside of said imaginary circle while said support member is supporting said split stator cores. 
 
     
     
       2. The manufacturing method of the rotating electric machine according to  claim 1 ,
 wherein an inner face of said support member in said radial direction is formed as a first inclined face inclined to be away from said central axis of said imaginary circle as the inner face extends from a first end portion side to a second end portion side of said support member positioned in the direction of said central axis, 
 said first inclined face of said support member is supported by a movable member provided to be movable in the direction of the central axis of said imaginary circle, 
 an outer face of said movable member in said radial direction is formed as a second inclined face for coming in contact with said first inclined face and extending along said first inclined face, and 
 said movable member is displaced in a direction from said first end portion to the second end portion so that said split stator cores are displaced toward the radial inside of said imaginary circle while said support member is supporting said split stator cores. 
 
     
     
       3. The manufacturing method of the rotating electric machine according to  claim 1 , wherein said fastening member is an annular member mounted on the outer peripheries of said split stator cores by shrink fitting or press fitting. 
     
     
       4. The manufacturing method of the rotating electric machine according to  claim 1 , wherein said split stator cores are made up of powder magnetic cores.